4^-3
You first need to make the exponent positive. To do this put it in a fraction.
1/4^3
Now solve the exponent.
4 * 4 * 4 =
^
16*4 = 64
1/64 is your answer
Subtract 350 from both sides then divide both sides by 25.
(c-350)/25 = h
X= 55 degrees ...........